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CVE-2020-26555

19
FAUCET Score

CVE-2020-26555 is a Bluetooth vulnerability affecting Core Specification 1.0B through 5.2, allowing an unauthenticated, nearby device to spoof a peer device's BD_ADDR during legacy BR/EDR PIN code pairing. This medium-severity flaw (CVSS 5.4) has a low attack complexity and requires physical proximity, potentially leading to limited confidentiality and integrity impacts without user interaction. While not currently in CISA's KEV catalog and lacking public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating awareness despite no active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.1b, <= 5.2CPE matchmatch criteria
cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:ax210_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:ax201_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:intel:ax200_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 86th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.8.1.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: bluez
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: bluez
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2020-26555Moderate

kernel: Bluetooth BR/EDR PIN Pairing procedure is vulnerable to an impersonation attack

May 24, 2021

References

kb.cert.org / vuls/id/799380
kb.cert.org / vuls/id/799380
Third Party AdvisoryUS Government Resource
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ
bluetooth.com / learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security
Vendor Advisory
intel.com / content/www/us/en/security-center/advisory/intel-sa-00520.html
Third Party Advisory